SB 6.18.49
nocchistam candikannam ca
samisam vrsalahrtam
bhuñjitodakyaya drstam
piben nañjalina tv apah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Never eat leftover food, never eat prasada offered to the goddess Kali [Durga], and do not eat anything contaminated by flesh or fish. Do not eat anything brought or touched by a sudra nor anything seen by a woman in her menstrual period. Do not drink water by joining your palms.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Generally the goddess Kali is offered food containing meat and fish, and therefore Kasyapa Muni strictly forbade his wife to take the remnants of such food. Actually a Vaisnava is not allowed to take any food offered to the demigods. A Vaisnava is always fixed in accepting prasada offered to Lord Visnu. Through all these instructions, Kasyapa Muni, in a negative way, instructed his wife Diti how to become a Vaisnavi.